you might have already know vs you may already know

Some examples from the web:

• Well, it says here you might have already won $15 million.
• Unless Mom and Dad already know.
• We already know there are ghosts.
• I already know everything about you anyway.
• Actually, you already know him.
• I already know what you did, Albert.
• The doctor already knows my offer.
• He probably already knows your strengths and weaknesses.
• Let me tell you something you already know.
• Then you already know the story.
• We already know it's Spookstreet.
• Yes, yes, you already know it.
• They probably already know our position anyway.
• People with the day off already know.
• I think they already know something.
• And you already know my thoughts on Gu.
• Always chasing what you already know.
• Children already know that dragons exist.
• However, we already know all this.
• Well, it says here you might have already won 15 million dollars.

Some examples from the web:

• Somebody, as you may already know, stole 20 microprocessors...
• Some of you may already know each other.
• As you may already know... I am incapable of taking a woman.
• While you may already know how a man feels about his dad...
• Kaiser bill has only one good arm, as you may already know, but it can reach as far as Budapest.
• As you may already know, Mr Rauscher's going to retire in six months.
• As some of you may already know, cousin Graziella, and I,... have decided to get married.
• However, since good news does travel fast, I have a feeling you may already know who is responsible for her death.
• Some of you may already know him from when he worked here,
• Thirdly, as you may already know, the working party on a Members' statute is going to start work immediately, with Mr Martin, our Vice-President, as its Chairman.
• My name is Kristen Richards... ...officer in the Juvenile Department of Corrections here in Blue Bay... ...as some of you may already know.
• As some of you may already know, there is a leaked document on the future of the common agricultural policy towards 2020, which also addresses the territorial challenges of the future.